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ThreatExpert's Statistics for BrowserModifier:Win32/Istbar.B [Microsoft]:

BrowserModifier:Win32/Istbar.B [Microsoft] is also known as:
Threat AliasNumber of Incidents
Adware.Istbar [Symantec]1
Adware-RBlast.dll [McAfee]1
TROJ_ISTBAR.K [Trend Micro]1
Trojan.DL.Istbar.WC [PC Tools]1 [Kaspersky Lab]1

BrowserModifier:Win32/Istbar.B [Microsoft] is known to be created as:
Note: %Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).